i just landed on this too i think we need whitelist but 1144 #ifdef CONFIG_USB_OTG_BLACKLIST_HUB 1145 if (hdev->parent) { 1146 dev_warn(&intf->dev, "ignoring external hub\n"); 1147 return -ENODEV; 1148 } and rx51_defconfig 1436 # CONFIG_USB_MUSB_HOST is not set 1437 # CONFIG_USB_MUSB_PERIPHERAL is not set 1438 CONFIG_USB_MUSB_OTG=y so we have OTG only !! memory behavior is provided by g_nokia and other modules ?